Solving Equations and Functions

Given: y is three times as big as x.

If x = 8 the y = ?

(a)  

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

Given f(x) = x² - 1, what is the value of f(10)?

• 100

• 19

• 99

• 9

Using f(x) , g(x) , or h(x) instead of y is called using ......

• Slope Notation

• Variable Notation

• Intercept Notation

• Function Notation

Evaluate for f(1)

• 0
• -3
• 3
• 2

• subtract 8
• divide 7
• x=3
• add 8
• multiply 7
• subtract 7
• x=2
• x=5.2
• x=7
• divide 8

A-B = C

(solve for A)

• A = C - B

• A = C + B

• A - C = B

• B = A - C